The laser cutter can mark, engrave or cut a large variety of materials. However, some materials simply don't work well (e.g. most metals), and some are extremely dangerous to the machine and to any humans nearby. You must check this list before placing any item in the laser cutter.

It is not always obvious which materials are dangerous. For example, polycarbonate (Lexan) produces flames, lethal chlorine gas, and hydrochloric acid, which will rapidly corrode both the laser cutter internals and the lungs of anyone who breathes in the fumes. Yet acrylic, which looks exactly like polycarbonate, cuts cleanly and safely, and is a very popular lasering material. So check and double-check your materials!